FNB Mistake costs client money

FNB made a mistake and delink all my electronic banking. During this time I could not access banking and were fined by the bank. though I spend three afternoons in the bank to get everything running again and to ask for a reversal of the fines, one of the fines were not reversed. FNB by mistake delinked all mt e banking and then fined me. When I put in request to reverse the fines they only reinbursed some of the money. Please help.